Nexplanon and bloating

i’ve been on Nexplanon for a few months now. The left picture is how my body normally looks in the right picture is how my body has been looking recently. I’ve been extremely bloated and it looks like I’m almost pregnant. I am sexually active, the last two times I had sex were October 4 and 14th… He always pulls out but I can’t tell if the bloating is because I am pregnant, or just because of the birth. I just need some advice and help because i get stressed about this stuff very easily! i’m also not sure if I should take a test to call my nerves. thanks for the help!